598 A head w dyno results

Finally finished up my new 598 last week. Spent Friday afternoon on the dyno getting it broken in and tuned for the most part.

Ok, here we go with some results and build details.

I'm happy with it. Not bragging, but nothing to keep secret either. My goal was 1050 hp and 900 ft lbs of torque using a single cast 4V intake. Made that with some room to spare. I realize I could have made more with a nice tunnel ram intake, but that would have complicated the packaging in the car. This is not a max effort deal. Just a reliable, low maint piece. No Ti valves, no shaft rockers, no crazy valve springs, etc.

The HP flattens out after 6400, but doesn't drop. That tells me there is a airflow bottleneck. I think it's the intake. It's almost box stock. Smoothed up the casting a little about 1" into each runner and cut the clover leaf out of the top as it was an obvious restriction to my Terminator throttle body. On the first freshen up I may send the intake for some Pro porting.

Larger 721K version for if you can't read this one well:

http://i374.photobucket.com/albums/oo186/dgcole01/Tbird%20engine/dynosheetC.jpg



The build:

The short block:
Ford Racing A460 block. 4.600 bore from Lem Evans
Scat 4.500 stroke 4340 crank. Adney Brown at Performance Crankshaft cut the counterweights down, knife edged them and shortened the snout to the short Boss 429 length. He balanced the crank as well.
Scat 6.800 H beam rods w ARP 2000 bolts.
Diamond mini dome pistons, Lem Evans custom spec'd
Childs and Akerly Extreme Rings
14:1 compression ratio
Clevite Main and Rod Bearings. Dura Bond "wide" cam bearings

The induction:
Trick Flow A460 18-bolt heads via Lem Evans. Ported by Charlie Evans at Evans Racing Engines. Port and valve job input From Lem Evans, Phillip Oakley and Lawes Mayfield. 2.35/1.88 SS valves.
link to head flow sheet:
http://i374.photobucket.com/albums/oo186/dgcole01/Tbird%20engine/A4608X10.jpg
Trick Flow A460 cast single 4 intake.
Comp Cams custom solid roller spec'd by Lem Evams
Comp 7/16 pushrods
Crower Stainless Steel stud mount rockers, 1.73 ratio
Jomar stud girdle
Morel Ultra Pro lifters, stock .875 size
Danny Bee belt drive
NGK -9 plugs

Oiling:
Kasse oil pump
aluminum oil pan by Charlie's Pans spec'd by Lem Evans
oil system mods, thanks to David Willingham at Advanced Motorsports Engineering.
Jomar oil filter
Brad Penn 30W oil

Front dress:
ATI 917562 damper. Damper has BBC front and SBF hub, designed for Boss 429 crank snout.
.400 damper spacer by Keith Fulp Motorsports (KFM)
MSD Crank trigger, plug wires and crank trigger distributor. Used a 6AL/Blaster coil on the dyno
will use a Digital 7/HVC coil in car. 32° timing
crank pulley/trigger wheel/mandrel centering adapter by KFM
Front motor plate cut for Danny Bee by KFM
special timing Pointer for Danny Bee by KFM
Star Machine std Vac pump from James Monroe at Killer Ron's
CSR water pump
Powermaster Ultra Mini Denso style alternator

Fuel system:
Ron's Fuel Injection alcohol injection
Terminator, single 2100 cfm throttle body
Ron's #1 pump. Using idle and high speed bypass.
Thanks to James Monroe and Keith Fulp for tuning help via phone when on the dyno. The fuel is still a little rich. I'm putting an Altronics combo O2/EGT logger system in the car to fine tune it.

Machine shop services by Rick Pennington and Albert Moore at:
http://www.performancespecialtiesinc.com/

Pics to come later.

Got it home today. It had a couple of minor oil leaks on the dyno. All fixed now.

A few pics in an album:


http://s374.photobucket.com/albums/oo186/dgcole01/Finished%20engine/